Question 2: standard notation with 3 decimals like this: X.XXX triprotic acid, H3A has the following K₂s: K₂1-4.45 x 104. K₂2-7.86 x 108 and Ka3-8.81 x 10-15. What is the K₁ of HA?? Type your answer...

Q: in the posted lecture notes! (1 element in 2 typeś of c.p's) Mark x for all that may apply: Pure?…

A: Pure substance: A pure substance is a sample of matter with both definite and constant composition…

Q: Assume that your temperature scale is based on ammonia, NH3. On the Celsius scale, ammonia has a…

A: Melting point of ammonia in celcius scale= - 77.7 °C Boiling point of ammonia in celcius scale=…

Q: 1 mol of any gas under room conditions occupy 24 L.   Under room conditions, 600 mL of a gas, X,…

A: Yes it's a bit tricky, don't worry I will help you out. Follow the steps: 1. Calculate the molar…

Q: A package of beef jerky says that there are 2 serving sizes (1 serving size =28g) in the package.…

A: Interpretation: A package of beef jerky says that there are 2 serving sizes (1 serving size =28g) in…

Q: Measurements have shown that the concentration of salt in seawater is 35.5 g·L 1 '. Calculate the…

A: Concentration is basically the availability of the solute per unit volume of solution. It is usually…

Q: 1. A friend claims that a metric ton is more than twice the mass of an English ton because a…

A: 1. A friend claims that a metric ton is more than twice the mass of an English ton because a…

Q: An imaginary element Z has two naturally occurring isotopes, ³Z and 4Z. ³Z has a mass of 3.016 amu,…

A:

Q: A chemist prepares a solution of potassium chloride (KCl) by measuring out 0.60 g of KCl into a 100.…

A: Given Mass of KCl = 0.60 g Volume = 100 ml

Q: you have 125 g of a certain seasoning and are told that it contains 22.0 g of salt. What is the…

A: Given,mass of salt = 22 gmass of seasoning = 125 gSo,mass percentage of salt in seasoning = (22…

Q: Solve this

A: Given- % abundance of 63Cu =  69.15 % % abundance of 65Cu =  30.85 % Atomic mass of  63Cu = 62.9300…

Q: Phosphoric acid is added to some sodas to enable more sugar to be dissolved. Some sodas have…

A: The question is based on the concept of mass percentage. The amount of substance present in hundred…

Q: Given the data and information in the prompt, how many sig figs is the percent of sugar in the…

A: Significant figures of a number in positional notation are digits in the number that are reliable…

Q: Ammonium phosphate (NH,),PO,) is an important ingredient in many fertilizers. It can be made by…

A: Phosphoric acid reacts with ammonia to form ammonium phosphate. The equation for the balanced…

Q: Best Value for % Purity How did you arrive at the best value?

A: The best value is calculated from the average of the good data values.

Q: In the number 723.4, which digit is estimated? 02 0 3 01 4

A: The given number is = 723.4This number contains a decimal place.

Q: The elements that compose​ seawater, along with the corresponding​ percents, are shown in the table.…

A: The elements that compose of sea water are : Oxygen and Hydrogen Because composition of oxygen is…

Q: codeine, C18H21 NO3 Express your answer in percent to three significant figures. %0 = UV IVE ΑΣΦ…

A:

Q: 1. How many in2 are in 450cm2? For your answer enter the first 4 digits of your value.

A: Often while calculating, there is a need to convert units from one system to another system. The…

Q: A raindrop has a mass of 50. mg and the Pacific Ocean has a mass of 7.08 × 1 Use this information to…

A: Answer: Number of particles present in 1 mole of a substance is always equal to Avogadro number…

Q: It is known that 1mL = 1cm³. What is the mass of a cube of gold (density = 19.32 g/cm³) if the…

A: Length of cube or side of gold = 2.00 cmdensity of gold = 19.32 g/cm3mass =?

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

A: Formula of methyl tert-butyl ether (MTBE) is :-  CH3OC(CH3)3

Q: Based on MN's labs, she requires 36 mMol of phosphate and 90 mEq of potassium added in her PN to…

A: Approach to solving the question:1. First, I converted the required phosphate (36 mMol) into…

Q: 1. How many hydrogen atoms are in the compound (NH.).CO,?

A: This question belong to mole concept in physical chemistry. We have solved the problem by unitary…

Q: A muffin recipe calls for 34 cup of sugar for every 12 teaspoon of salt. How much salt should be…

A: In this question we need to calculate the amount of salt needed for 1 cup of sugar

Q: Do I always have to divide the top number by the bottom? In this case... 1mol divided by 174.1g of…

A: Actually from given grams of pure juglone the moles of juglone present have to be calculated. In…

Q: Calculate the volume in milliliters of a 1.9M silver perchlorate solution that contains 50.0 g of…

A: First find out the number of moles for the given compound. Using the calculated moles and molarity,…

Q: Orciprenaline(C11H17N03, 211.258 g/mol) is a bronchodilator used in the treatment of asthma. The BP…

A: ORCIPRENALINE belongs to the class of drugs called 'bronchodilators' that is used for treating…

Q: 26 mg of sodium.  How many atoms of sodium are found per mL of the solution?  1 oz. = 29.57 mL…

A: 1 oz = 29.57 mL

Q: An element has only 2 isotopes. One isotope has a natural abundance of 36% and mass of 210.55 amu.…

A: The atoms which has same atomic number but different mass number is known as isotopes.  example-…

Q: Q1. In an experiment, 10.0-grams of an unknown calcium nitrate hydrate is heated to drive off all of…

A:

Q: On average, a drop of water has a volume of 50 microliters. What is this volume in dekaliters ?

A: Units are measurements of particular value.  Measurement is determining how large or small a…

Q: What mass of magnesium chloride contains 1.441 mol Cl? Give your answer to two decimal places.…

A: We have found out the molar mass of magnesium chloride.

Q: Calculate the mass of vanadium(V) oxide (V₂03) that contains a billion (1.0× 10°) oxygen atoms. Be…

A: Number of oxygen (O) atoms = 1.0 × 109 atoms mass of Vanadium(V) oxide (V2O5) = ? Note: Molar mass…

Q: Voeitima C Mossuite+ weid batte 1 2. 18.95589 18.3015g 17.64589 16११५११ 3.

A: Answer:

Q: 2. Alex has a big black tattoo of a teddy bear on their back. Iron (II, III) oxide was used as the…

A: Given:  The chemical formula is :  Fe3O4 sol a)   molar mass  =  3 Fe + 4 O =  (3 x 55.84)  +  (4 x…

Q: is acidic or cor [H*]

A:

Q: I`m not seeing this number 2.589 only what they have

A: Units can be converted if we know the conversion factor.

Q: A chemist needs to know the mass of a sample of aniline to 2 significant digits. She puts the sample…

A: Significant figures are the number or digits that are meaningful and are non zero but the zeros…

Q: O CHEMICAL REACTIONS Using the Avogadro Number An aluminum atom has a mass of 4.48 × 10 -23 g and a…

A: Answer 1.     27.0 g  Answer 2.  1.85 × 105 moles

Q: 15. An object has a mass of exactly 5 g on an analytical balance that has an 'accuraey of 0.1 m many…

A: The degree of accuracy of the measurement can be calculated by using significant figures. In any…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.